New study suggests COVID-19 immunity is 'waning,' researchers say

Researchers in the UK say they have seen a "significant" decrease in the percentage of the population with COVID-19 antibodies, possibly suggesting a "dwindling immunity".
Imperial College London scientists in the study found that the prevalence of COVID-19 antibodies fell from 6 percent of the UK population in June to 4.4 percent in September, Reuters reports. They concluded that the proportion of the population with detectable antibodies "decreased significantly" by sending fingerprint tests to a randomly selected group of over 365,000 people in England, according to CNN.
"Given the evidence, I would say that from what we know for other coronaviruses, it appears that immunity is declining at the same rate that antibodies are declining, and that this is an indication of waning immunity Population level is. " Wendy Barclay, director of the infectious diseases department at Imperial College London, said, according to Reuters.
Researchers looked specifically for IgG antibodies in the study, and CNN notes that some other research has suggested "that other types of antibodies may last longer than IgG".
Helen Ward of Imperial College London told BBC News the study suggests "immunity wears off pretty quickly". Ward added in a statement, "We don't yet know if this puts these people at risk of re-infection with the virus that causes COVID-19. However, it is important that everyone continues to follow directions to avoid the risk." for yourself and others to decrease. " . "
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